TekRADIUS LT is a RADIUS server for Windows. You’re free to use freeware version for both commercial and personal use.
TekWiFi is a WiFi connection and diagnostic tool runs under Windows (XP, Vista, Windows 7 / 8/10, 2008-2016 Server). TekWiFi simplifies connection to the wireless network which PEAP authentication implemented.
SIP Interactive Voice Response System for Windows
X.509 Certificate / CSR Generator and Signing Tool for Windows.
Tekaba is a SIP media gateway (Based on RFC 3261) runs under Windows (Vista, Windows 7 / 8/10, 2008-2016 Server).
SIP Route / Redirect Server for Windows with ENUM Support
SIP Conference Server for Windows
TelCLI is a command line TELNET client runs under Windows.